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2.3 Piping
2.3.1 Piping for inlet-outlet ports
: Before start work, ensure that all hazardous energies are shut
off. Refer to 2.1 For Safety Use.
- LR series has installed flange for keeping and the suction
entrance mesh on the suction entrance flange.
- HR series has installed flange for keeping on the suction
entrance flange. The suction entrance mesh has not been
installed. Please do not remove flange for keeping until the time
of connected work of piping to prevent the foreign body fall in
the pump.
- When connecting piping, be careful not to drop foreign
matter (e.g. bolt) into the inlet/outlet port of the pump. If
something was dropped into these port, then the pump should
be disassembled to removed the matter from the pump, so
contact with the your local service center.
- The pump flange should not be loaded directly (refer to 2.4.5
Earthquake Resistance Measures).
- Be careful not to damage the gasket surface. After the
completion of the piping work, perform gas leak test for the
whole system.
- If thin metal piping, bellows or the likes are used, the pulsing
stream of gas in piping may produce pipe resonance, and the
sound could exceed the work environment sound criteria if the
piping, bellows or the like are made with thin metal wall.
Provide material of adequate thickness.
- The temperature of the intake pipe and the exhaust pipe
becomes 70℃ or more. Set up the protection cover when the
connection of the piping of the intake and the exhaust ends.
- When the pump is driven, AC200V is energized to the exhaust
pipe heater. Obtain the protection cover so that the hand should
not touch the heater part after connecting the exhaust pipe.
- Moreover, the protection cover is preparatory by the option.
WARNING
CAUTION
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